55% of what number is 70? round to the nearest tenth.

55% of x is 70
0.55 times x=70
divide both sides by 0.55
127.27272727
round
127.3

To answer the question, let x be the unknown number. The product of this number and the decimal equivalent of the given percentage should be 70. The equation that best represent the given above is,
                                  0.55x = 70
                                 x = 70 / 0.55 =127.27
Thus, 55% of 127.27 is equal to 70.